Question: Who is the paternal grandfather of Euphemia Ii, Countess Of Ross?

Knowledge 1: Euphemia II, Countess of Ross
Euphemia II, Countess of Ross (also Euphemia Leslie) was the daughter of Alexander Leslie, Earl of Ross and his wife Isabella Stewart, daughter of Robert Stewart, 1st Duke of Albany.She was the only child and heir of Earl Alexander, and succeeded to the earldom "de jure" upon his death in 1402.She became a ward of her grandfather Albany, and never seems to have exercised much power in the province of Ross.There was a failed attempt to marry her to Thomas Dunbar, the son of Thomas Dunbar, Earl of Moray.Governor Albany persuaded her to resign the earldom to his own second son, John Stewart, Earl of Buchan.This action was challenged by Domhnall of Islay, Lord of the Isles, who claimed the earldom on behalf of his wife Mariota and who became an enemy of the Albany Stewarts.Euphemia thereafter disappears from the record, retiring to the nunnery of North Berwick.Some of the histories report that she was deformed, seemingly a hunchback. [SEP] Knowledge 2: Alexander Leslie, Earl of Ross
Alexander Leslie, Earl of Ross (died 1402) was a Scottish nobleman.Born between 1367 and 1382, he was the son of Walter Leslie, Lord of Ross and Euphemia I, Countess of Ross.In around 1394 he became Earl of Ross and sometime before 1398 he married Isabel Stewart, daughter of Robert Stewart, Duke of Albany.They had one child, Euphemia.He died at Dingwall, Scotland on 8 May 1402.
Knowledge 1: Euphemia II, Countess of Ross
Euphemia II, Countess of Ross (also Euphemia Leslie) was the daughter of Alexander Leslie, Earl of Ross and his wife Isabella Stewart, daughter of Robert Stewart, 1st Duke of Albany.She was the only child and heir of Earl Alexander, and succeeded to the earldom "de jure" upon his death in 1402.She became a ward of her grandfather Albany, and never seems to have exercised much power in the province of Ross.There was a failed attempt to marry her to Thomas Dunbar, the son of Thomas Dunbar, Earl of Moray.Governor Albany persuaded her to resign the earldom to his own second son, John Stewart, Earl of Buchan.This action was challenged by Domhnall of Islay, Lord of the Isles, who claimed the earldom on behalf of his wife Mariota and who became an enemy of the Albany Stewarts.Euphemia thereafter disappears from the record, retiring to the nunnery of North Berwick.Some of the histories report that she was deformed, seemingly a hunchback. [SEP] Knowledge 2: Mariota, Countess of Ross
Mariota, Countess of Ross( Mairead, also called Mary and Margaret; died 1440) was the daughter of Euphemia I, Countess of Ross and her husband, the crusading war- hero Walter Leslie, Lord of Ross.Upon the death of her brother, Alexander Leslie, Earl of Ross, she became the heir- presumptive of her niece Euphemia II, Countess of Ross although her husband Domhnall of Islay, Lord of the Isles pressed Mariota's superior claim to the earldom.Domhnall attempted to gain control of the earldom, and sometime after 1405 but before 1411, Domhnall gained control of Dingwall Castle.In the year after the death of the nominal king Robert III of Scotland( 1406), in August 1407, Domhnall sent emissaries to England to the heir of the throne, the captive James Stewart.King Henry IV of England sent his own emissaries the following year to negotiate an alliance against Robert Stewart, Duke of Albany, the Guardian of Scotland who was controlling Euphemia and the earldom.With control over the principal seat of the earldom of Ross and support of the exiled heir to the Scottish throne, in 1411 Domhnall felt strong enough to march against Albany's main northern ally, Alexander Stewart, Earl of Mar.At the Battle of Harlaw Domhnall failed to inflict a decisive victory, and withdrew back to the western highlands.In the aftermath, Albany was able to retake Dingwall and seize control of Easter Ross.In 1415, Euphemia was persuaded by Albany to resign the earldom to his own second son, John Stewart, Earl of Buchan.This action was challenged by Domhnall of Islay, who continued to claim the earldom on behalf of Mariota.After the return of King James the latter destroyed the power of the Albany Stewarts, executing the Albany's son and successor Murdoch Stewart, Duke of Albany.Domhnall had died in 1423, but Mariota continued to enjoy the support of his successor and her own son, Alexander.Alexander took over her claims, and in 1437 her son was recognized as earl by the king.She died in 1440.She had two known children, Alexander and Mariota.
Knowledge 1: Alexander Leslie, Earl of Ross
Alexander Leslie, Earl of Ross (died 1402) was a Scottish nobleman.Born between 1367 and 1382, he was the son of Walter Leslie, Lord of Ross and Euphemia I, Countess of Ross.In around 1394 he became Earl of Ross and sometime before 1398 he married Isabel Stewart, daughter of Robert Stewart, Duke of Albany.They had one child, Euphemia.He died at Dingwall, Scotland on 8 May 1402. [SEP] Knowledge 2: Mariota, Countess of Ross
Mariota, Countess of Ross( Mairead, also called Mary and Margaret; died 1440) was the daughter of Euphemia I, Countess of Ross and her husband, the crusading war- hero Walter Leslie, Lord of Ross.Upon the death of her brother, Alexander Leslie, Earl of Ross, she became the heir- presumptive of her niece Euphemia II, Countess of Ross although her husband Domhnall of Islay, Lord of the Isles pressed Mariota's superior claim to the earldom.Domhnall attempted to gain control of the earldom, and sometime after 1405 but before 1411, Domhnall gained control of Dingwall Castle.In the year after the death of the nominal king Robert III of Scotland( 1406), in August 1407, Domhnall sent emissaries to England to the heir of the throne, the captive James Stewart.King Henry IV of England sent his own emissaries the following year to negotiate an alliance against Robert Stewart, Duke of Albany, the Guardian of Scotland who was controlling Euphemia and the earldom.With control over the principal seat of the earldom of Ross and support of the exiled heir to the Scottish throne, in 1411 Domhnall felt strong enough to march against Albany's main northern ally, Alexander Stewart, Earl of Mar.At the Battle of Harlaw Domhnall failed to inflict a decisive victory, and withdrew back to the western highlands.In the aftermath, Albany was able to retake Dingwall and seize control of Easter Ross.In 1415, Euphemia was persuaded by Albany to resign the earldom to his own second son, John Stewart, Earl of Buchan.This action was challenged by Domhnall of Islay, who continued to claim the earldom on behalf of Mariota.After the return of King James the latter destroyed the power of the Albany Stewarts, executing the Albany's son and successor Murdoch Stewart, Duke of Albany.Domhnall had died in 1423, but Mariota continued to enjoy the support of his successor and her own son, Alexander.Alexander took over her claims, and in 1437 her son was recognized as earl by the king.She died in 1440.She had two known children, Alexander and Mariota.

Answer: Walter Leslie