Giovan Battista Ludovisi (John Baptist Ludovisi) (1647 - 24 August 1699) was son and heir of Niccolò I Ludovisi and his third wife Costanza Pamphili.

Giovan inherited his father's domains, including the Principality of Piombino

Principality of Piombino

The Principality of Piombino was a state of Italy, which existed from 1399 to 1805, when Napoleon absorbed it into the Principality of Lucca and Piombino...

 on 1 September 1665. In 1690 he sold Ottoboni to the Duchy of Fiano

Fiano

Fiano may refer to:Places:* Fiano, Piedmont, a town in Piedmont, Italy* Fiano Romano, a town in Lazio, ItalyViticulture:* Fiano , a white grape variety from Campania, Italy* Fiano di Avellino, an Italian wine DOCG...

. He was viceroy in India.

Giovan married in 1669 to Mary, daughter of William Ramon de Moncada, Marquis of Aytona. Mary died in Rome

Rome

Rome is the capital of Italy and the country's largest and most populated city and comune, with over 2.7 million residents in . The city is located in the central-western portion of the Italian Peninsula, on the Tiber River within the Lazio region of Italy.Rome's history spans two and a half...

 in 1694 without leaving children. In 1697 Giovan married a second time with Anna Furnari, this marriage produced one son, Nicholas, who succeeded his father but died in 1700 aged only one.

After the death of the young Nicholas, Giovan's sister Olimpia succeeded as Princess of Piombino; on her death his younger sister Ippolita

Ippolita Ludovisi

Olimpia Ippolita I Ludovisi was the Princess of Piombino from 1701 until her death. She was born in Cagliari, the youngest daughter of Niccolò I Ludovisi....

succeeded, she left surviving children.