Hi JuniorBee and welcome to Forum:-)
1a - Is a SI clue and does indeed start with two vowels. The wordplay is single letter "tense" then a 2,5 phrase meaning "in dispute" minus its last letter/'endlessly' - definition is a non-English phrase meaning "in a specific year of one's age"
48a - Is a SI clue and the wordplay is simply one letter "name" and it's a DD so I found by scouring Google:-)
61a - Is a normal clue with a cryptic definition as in if "you're (found to be) over this" then you are 'officially "drunk"
We look forward to hearing more from you in the future:-)