Non si sa con esattezza quanti anni aveva (IAFD indica che era nato nel 1938), vari fonti indicano tra i 74 a 76 anni.
Durante la sua carriera ha diretto +300 film. Ebbe anche un piccolo ruolo nel film cult d'orrore LAST HOUSE ON THE LEFT (1972), che ha sempre detestato.
http://www.iafd.com/person.rme/perfid=F ... incoln.htm
Lincoln era nato a New York, e verso la fine degli anni 70 e inizio degli anni 80 era proprietario per un certo tempo del sex club Plato's Retreat. In primo trempo era sposato con l'attrice Tiffany Clark (dal 1984), poi con la sua collaboratrice-regista-produttrice Patti Rhodes-Lincoln (verso la fine degli anni 80, si sono separati dopo ma mai divorziati; con Patti ha avuto una figlia Angelica, che si curava del padre malato in questi ultimi tempi).
http://www.xbiz.com/news/news_piece.php ... &q=lincoln

In questa foto (scattata negli anni 90) Lincoln appare con Bruce Seven (nel centro) e Alex de Renzy, due altri registi leggendari, anche loro spariti da tempo.

Ecco come se lo ricorda Rocco Siffredi:
http://business.avn.com/articles/video/ ... 01086.html
"I worked with Fred Lincoln in 1987 in Germany, and right away we became huge friends even if our languages were different," remembered Rocco Siffredi. "I had many people saying to me, 'Come to the U.S.,' that they would help me, I could sleep in their house and I could borrow their car but that was only bla-bla-bla. The only man who invited me to come to America and really meant it was Freddie Lincoln."
"In 1989, I arrived at LAX airport and as soon as I stepped outside, there was Fred Lincoln waiting for me. I remember it like it's today. He said 'Welcome to America, Rocco,' and I told him I was very nervous, I didn't know how to speak English well at all actually, and he said, 'Don't worry; American women will love your Italian language, especially your big sausage,' and he started to laugh. He took me to his house, and over the next two weeks, him and his wife Patti Rhodes introduced me to all the big guys in L.A., starting with John Leslie forward to John Stagliano, Alex de Renzy and Anthony Spinelli, etc., etc."
"Freddie was a real talented director with incredible humanity and a huge sense of humor," Siffredi continued. "One thing about Freddie which made him, for me, a close friend was his way of talking to me and to other people. He was so direct: if he liked you, he said so; if he didn't like you, he'd say it exactly the same way. For me, that made my consideration of this guy on the top-top level. In a few words, he was a man with real balls."
"I remember when he and Patti Rhodes conceived their beautiful daughter Angelica in Florence during a shoot around 20 years ago. And I know for a fact that as big and strong man as Freddie was, the only pain and sadness that probably he had to face was the fact that he had to leave Angelica alone in this world."
"Last time I spoke to Fred was a few months ago, and he had lot of nice consideration for me, basically very proud like a father is proud of his son, and that was because I considered Fred my second father through all those years in this industry."
"One of the most loyal, honest and generous person I have ever met. Un grandissimo abbraccio! Which means 'big hug!'"