19g -20g -21g
1920au1930au1940au1950au1960au -1970au -1980au1990au2000au2010au2020au
19651966196719681969 -1970 -19711972197319741975
Dydd Iau oedd diwrnod cyntaf1970 neuMCMLXX.
- 4 Ionawr -D. J. Williams, llenor, 84[2]
- 12 Ionawr -Gwilym Gwalchmai Jones, cerddor, 49
- 23 Ionawr -Ifan ab Owen Edwards, awdur, 74
- 26 Ionawr -Albert Evans-Jones (Cynan), bardd, 74
- 29 Ionawr -B. H. Liddell Hart, hanesydd milwrol, 74
- 2 Chwefror -Bertrand Russell, athronydd, 97
- 25 Chwefror -Mark Rothko, arlunydd, 66
- 7 Mai -Jack Jones, nofelydd, 85
- 14 Mai -Billie Burke, actores, 85
- 3 Mehefin -J. R. Jones, athronydd, 58
- 7 Mehefin -E. M. Forster, nofelydd, 91[3]
- 18 Medi -Jimi Hendrix, cerddor, 27[4]
- 28 Medi -Gamal Abdel Nasser, gwleidydd, 52
- 4 Hydref -Janis Joplin, cantores, 27
- 18 Hydref -Máirtín Ó Cadhain, awdur, tua 64
- 7 Tachwedd -Naunton Wayne, actor, 69
- 9 Tachwedd
- 13 Tachwedd -Bessie Braddock, gwleidydd, 71
| Poblogaeth y Byd |
|---|
| 1970 | 1965 | 1975 |
|---|
| Byd | 3,692,492,000 | 3,334,874,000 |  357,618,000 | 4,068,109,000 | 1 |
|---|
| Affrica | 357,283,000 | 313,744,000 | 43,539,000 | 408,160,000 | 50,877,000 |
|---|
| Asia | 2,143,118,000 | 1,899,424,000 | 243,694,000 | 2,397,512,000 | 254,394,000 |
|---|
| Ewrop | 655,855,000 | 634,026,000 | 21,829,000 | 675,542,000 | 19,687,000 |
|---|
| America Ladin | 284,856,000 | 250,452,000 | 34,404,000 | 321,906,000 | 37,050,000 |
|---|
| Gogledd America | 231,937,000 | 219,570,000 | 12,367,000 | 243,425,000 | 11,488,000 |
|---|
| Oceania | 19,443,000 | 17,657,000 | 1,786,000 | 21,564,000 | 2,121,000 |
|---|
