Total babies named Lewellyn (all years): 339
| Year | Boys (count / rank / %) |
|---|---|
| 1962 | 5 / #4394 / 0.000% |
| 1961 | 5 / #4413 / 0.000% |
| 1958 | 7 / #3448 / 0.000% |
| 1956 | 9 / #2894 / 0.000% |
| 1954 | 5 / #4141 / 0.000% |
| 1952 | 7 / #3261 / 0.000% |
| 1951 | 5 / #4031 / 0.000% |
| 1949 | 6 / #3545 / 0.000% |
| 1948 | 6 / #3525 / 0.000% |
| 1945 | 6 / #3191 / 0.000% |
| Year | Boys (count / rank / %) |
|---|---|
| 1944 | 14 / #1935 / 0.001% |
| 1943 | 5 / #3832 / 0.000% |
| 1940 | 5 / #3736 / 0.000% |
| 1939 | 13 / #2013 / 0.001% |
| 1937 | 5 / #3825 / 0.000% |
| 1936 | 6 / #3379 / 0.001% |
| 1935 | 8 / #2844 / 0.001% |
| 1934 | 8 / #2857 / 0.001% |
| 1933 | 7 / #3165 / 0.001% |
| 1931 | 7 / #3279 / 0.001% |
| Year | Boys (count / rank / %) |
|---|---|
| 1930 | 12 / #2385 / 0.001% |
| 1929 | 17 / #1899 / 0.002% |
| 1928 | 9 / #2972 / 0.001% |
| 1927 | 5 / #4535 / 0.000% |
| 1926 | 11 / #2662 / 0.001% |
| 1925 | 10 / #2858 / 0.001% |
| 1924 | 6 / #4143 / 0.001% |
| 1923 | 7 / #3675 / 0.001% |
| 1922 | 8 / #3418 / 0.001% |
| 1921 | 15 / #2220 / 0.001% |
| Year | Boys (count / rank / %) |
|---|---|
| 1920 | 9 / #3096 / 0.001% |
| 1919 | 9 / #3021 / 0.001% |
| 1918 | 8 / #3262 / 0.001% |
| 1917 | 7 / #3421 / 0.001% |
| 1916 | 10 / #2653 / 0.001% |
| 1915 | 5 / #4148 / 0.001% |
| 1914 | 5 / #3543 / 0.001% |
| 1913 | 8 / #2184 / 0.002% |
| 1912 | 6 / #2443 / 0.001% |