After careful research, I have discovered that:
Frank Mu, 12 and Joshua Mu, 7 (whose current rating at 1401 is = 5th on the 8 & Under List for the USA) are both on the coveted Top 10 list for Scholastic Players whose 2 letter last names end in "u" !! (O.K. I have no life, LF)

1 Yu Zhong Lu  2123
2 Evan Ju 1986
3 Zhi-Ya Hu 1919
4 Ricky Yu 1888
5 Stephen Ju 1787
6 Fan Wu 1762
7 Frank Mu 1717
8  Peter Tu 1675
9 Alexander Wu 1638
10 Joshua Mu 1401
11 Christopher Ju 1375
12 Jeffrey Wu 1353
13 Paul Gu 1349
14 Davis Xu 1301
15 Winber Xu 1196
16 Ryan Tu 1166
17 Michael Fu 1156
18 Kevin Gu 1102