Complex sentence: Walter de Burgh (c.1230--28 July 1271 in Galway) was 2nd Baron of Connaught and 1st Earl of Ulster (after its restoration), the second son of Richard Mór de Burgh and Egidia de Lacy, Lady of Connacht.
Split into simpler sentences: Walter de Burgh (c.1230--28 July 1271 in Galway) was 2nd Lord of Connaught and 1st Earl of Ulster. De Burgh was the second son of Richard Mór de Burgh and Egidia de Lacy, Lady of Connacht.