If the zaani (fornicator) admits to paternity of his illegitimate child, should the child be attributed to him?
Question

                My father accepted Islam before my birth but my claims he did not have the correct understanding of the deen and was not practicing, him and my mother were not married nor was my mother Muslim when they had me so I was born as a result of zina. My question is that since my father recognizes me as his child and he is the only male muslim in my family does that make him my wali? And if not is the choice mines to appoint whom I like to handle my affairs?.
Praise be to Allah.If the zaani 
	acknowledges and admits paternity of his illegitimate child, should the 
	child be attributed to him and regarded as a legitimate child of his, with 
	all the attendant rulings on parents and offspring, or not? 
There is a 
	difference of opinion among the scholars concerning this issue. 
The majority 
	of scholars are of the view that the illegitimate child is not to be 
	attributed to the zaani, even if he acknowledges him and wants to attribute 
	the child to himself; rather the child is to be attributed to his mother 
	only. 
Some of the 
	scholars are of the view that if the zaani wants to attribute his 
	illegitimate child to himself, then the child should be attributed to him. 
	This is also the view of some of the salaf (early generations) and was 
	narrated from Imam Abu Haneefah. 
This 
	difference of opinion has been discussed previously in the answer to 
	question no. 33591 
The view 
	that the illegitimate child is to be attributed to the zaani if he wants to 
	acknowledge him and if the mother was not married to any other man, is more 
	correct, and Allah knows best. It was the view favoured by Shaykh al-Islam 
	Ibn Taymiyah (may Allah have mercy on him) and his student Ibn al-Qayyim. 
	See: al-Ikhtiyaaraat al-Fiqhiyyah (p. 477) and Zaad al-Ma‘aad 
	(5/374).
 Ad-Daarimi 
	narrated in his Sunan (3106) that Sulaymaan ibn Yasaar said: If a man 
	claims that a boy is his son and that he committed zina with his mother, and 
	no one else claims that boy as his, then he may inherit from him. 
Ibn 
	al-Qayyim said: Rationally speaking, the father is one of the two parties 
	involved in the act (of zina), and as the child is attributed to his mother 
	and she may inherit from him and he may inherit from her, and the blood 
	relationship is established between him and the mother’s relatives, even 
	though she bore him as the result of zina and the child was the product of 
	the water of both parties and they both agreed that he is their child, why 
	shouldn’t the child be attributed to him if there is no other man who claims 
	to be this child’s father. This is based purely on rational thinking. 
	
End quote 
	from Zaad al-Ma‘aad, 5/374 
Based on 
	this opinion, your father is your shar‘i guardian and in that case you do 
	not need to choose someone else to be in charge of your affairs when he is 
	still present. 
And Allah knows best.