Apollo 11 moonwalker Buzz Aldrin is suing two of his children and a former business manager, accusing them of misusing his credit cards, transferring money from an account and slandering him by saying he has dementia.

Aldrin’s lawsuit filed earlier this month in a Florida state court came a week after his children, Andrew and Janice, filed a petition claiming their father was suffering from memory loss, delusions, paranoia and confusion. They asked for the court to name them his legal guardians, saying Aldrin was associating with new friends who were trying to alienate Aldrin from his family and that he had been spending his assets at “an alarming rate.”