Claudine, Lady of Monaco
Claudine or Claudia( – 19 November 1515) was Lady regnant of Monaco between 1457 and 1458, and the Lady consort of Monaco by marriage to Lord Lambert of Monaco.
Princess Charlotte, Duchess of Valentinois
Princess Charlotte of Monaco, Duchess of Valentinois( Charlotte Louise Juliette Grimaldi; 30 September 1898 – 15 November 1977), was the daughter of Louis II, Prince of Monaco, and the mother of Rainier III, Prince of Monaco.
From 1922 until 1944, she was the Hereditary Princess of Monaco, heir presumptive to the throne.
Pomellina Fregoso
Pomellina Fregoso( 1387/88 in Genoa – 1468 in Monaco) was Lady Consort of Monaco by marriage to Jean I, Lord of Monaco, and the mother of Lord Catalan.
She served as regent of Monaco several times during the absence of her husband, as well as between 1457 and March 1458, as the guardian of her granddaughter Claudine, Lady of Monaco.
She was thus the first woman to rule Monaco.
Ippolita Trivulzio
Ippolita Trivulzio( 1600 – 20 June 1638) was the Princess of Monaco by marriage to Honoré II of Monaco, and was the first Monegasque consort to bear the title of" Princess".
Jacques, Hereditary Prince of Monaco
Jacques, Hereditary Prince of Monaco, Marquis of Baux( Jacques Honoré Rainier Grimaldi; born 10 December 2014), is the heir apparent to the Monegasque throne.
He is the son of Prince Albert II and Princess Charlene and twin brother of Princess Gabriella.
Albert II, Prince of Monaco
Albert II (Albert Alexandre Louis Pierre Grimaldi; born 14 March 1958) is the reigning monarch of the Principality of Monaco and head of the princely house of Grimaldi.
He is the son of Prince Rainier III and Grace, Princess of Monaco formerly Grace Kelly, the American actress.
Prince Albert's sisters are Caroline, Princess of Hanover, and Princess Stéphanie.
In July 2011, Prince Albert married Charlene Wittstock.
Prince Albert II is one of the wealthiest royals in the world, with assets valued at more than $1 billion, which include land in Monaco and France.
Although Prince Albert does not own the Prince's Palace of Monaco, he does own shares in the "Société des bains de mer de Monaco", which operates Monaco's casino and other entertainment properties in the principality.
Elisabeth-Anne de Massy
Baroness Elisabeth-Anne de Massy Noghès (born 13 January 1947) is the daughter of Princess Antoinette of Monaco and Alexandre-Athenase Noghès.
She is a first cousin of the reigning Prince Albert II and niece of Rainier III.
She is the godmother of Princess Stéphanie of Monaco.
Although Elisabeth-Anne was born out of wedlock, her parents married in 1951, thus legitimizing her, and placing her in line to the throne.
Baroness Elisabeth Anne can represent the Sovereign Prince of Monaco at official events.
Princess Gabriella, Countess of Carladès
Princess Gabriella of Monaco, Countess of Carladès
(Gabriella Thérèse Marie Grimaldi; born 10 December 2014), is the daughter of Prince Albert II and Princess Charlene.
She is second in the line of succession to the Monegasque throne, behind her twin brother, Hereditary Prince Jacques.
Robert Calcagno
Robert Calcagno born 26 June 1960 is a Monegasque politician and leader who is CEO of the Oceanographic Institute
Foundation Albert I, Prince of Monaco.
Robert Calcagno has held ministerial posts in the government of the Principality of Monaco between 2006 and 2009.
He now leads the Oceanographic Museum of Monaco and the Maison des océans in Paris
His commitment to the protection of the oceans, to a better balance between Humankind and Nature and, on a broader level, his involvement in the economic, social and international life of the Principality of Monaco, have made him one of the key players in the policies of H.S.H. Prince Albert II of Monaco.
Prince Joseph of Monaco
Prince Joseph of Monaco( Joseph
Marie Jerôme Honoré; 10 September 1763 – 28 June 1816) was a Monagasque prince and brother of Honoré IV, Prince of Monaco.
Her served as regent of Monaco on behalf of his brother in 1814- 1815.

Question: Who is Princess Gabriella, Countess Of Carladès's paternal grandfather?
Answer: Rainier III