If you are talking about the inventor of the game of Baseball, then his name was Abner
Doubleday.
His wife was named Mary
the name is mr. brazilleader
Mr. Helicopter AKA, the meat spinner
Mr. Madisons War
The proper way address them is Mr. or Mrs Last Name
Nelson Doubleday's birth name is Nelson Doubleday Jr..
Portia Doubleday's birth name is Portia Ann Doubleday.
Kaitlin Doubleday's birth name is Jan Kaitlin Len Doubleday.
Mr. Collins first name is William, as we know from his signature on the first letter he sends Mr. Bennet.
Abner Doubledays real name is just Abner Doubleday he didnt have a middle name
Mr. Celsius first name is Anders.
Mr. Rogers first name was Fred
Mr. Pitt's first name is Justin.
In English Grammar, there should be a full stop/period after 'Mr'. because 'Mr' is shortened form of 'Mister'. After the full stop.period then a space then a capital letter to start the name. e.g. Mister Joseph Smith , in shortened form it is 'Mr. J. Smith.'. Note the stops and the spaces. NB For any word in the English language that is shortened, then the shortened form has a full stop/period after it. e.g. Mrs. (Missis) Dr. (Doctor) Capt. (Captain) No. (Number). # & e.g. 'Exempli Gratia'.
Mr. Pickwick's first name is Samuel.
Mr. Avery's first name in "To Kill a Mockingbird" is not explicitly mentioned in the book. He is referred to simply as Mr. Avery.
No, Mr. Avery is only referred to by his last name in the novel.