Roger, I have not tried this so I don't know if it will work with tables, but you might try using the <center>tag before the start of the table, then use </center> after the end of the table. That is supposed to center whatever is between the start and end tags.
A brute force way of moving the table toward the right would be to add a column at the left and put several hard spaces (use trial and error to place as many as you need) in it on the first line, then have that column on each line but you can leave it blank. Using your first line as an example:
{|
|-
! scope="col" |
! scope="col" | '''Name'''
! scope="col" | '''Sex'''
! scope="col" | '''Age'''
! scope="col" | '''Birth'''
Not very pretty, but it will definitely do what you want, provided you remove the table borders.